How-To: Encoding Binary Data in a Barcode

      private static void WriteBarcodeToImage(string inputFile, string outputBarcode)
      {
         // load the input image and save it to a memory streasm
         RasterCodecs codecs = new RasterCodecs();
         RasterImage input = codecs.Load(inputFile);
         MemoryStream ms = new MemoryStream();
         codecs.Save(input, ms, input.OriginalFormat, input.BitsPerPixel);

         // use SetData() to specify what data to encode in the barcode
         QRBarcodeData qrd = new QRBarcodeData();
         qrd.Symbology = BarcodeSymbology.QR;
         qrd.SetData(ms.ToArray());

         // create a new rasterimage to hold the generated barcode
         RasterImage barcode = RasterImage.Create(1000, 1000, 1, 150, RasterColor.White);

         // write the barcode to the rasterimage and save it to disk
         BarcodeEngine engine = new BarcodeEngine();
         engine.Writer.WriteBarcode(barcode, qrd, null);
         codecs.Save(barcode, outputBarcode, input.OriginalFormat, 0);
         codecs.Dispose();
      }

      private static RasterImage ReadImageFromBarcode(RasterImage barcode)
      {
         RasterCodecs codecs = new RasterCodecs();
         BarcodeEngine engine = new BarcodeEngine();

         // read the binary data in the barcode
         BarcodeData readBarcode = engine.Reader.ReadBarcodes(barcode, LogicalRectangle.Empty, 0, new BarcodeSymbology[] { BarcodeSymbology.QR })[0];

         // pack the binary data into a memorystream, then load as an image
         MemoryStream outStream = new MemoryStream(readBarcode.GetData());
         RasterImage decodedImage = codecs.Load(outStream);

         return decodedImage;
      }